APA (7 वां संस्करण) प्रशस्ति पत्र

Mabutas, A., & Busto, A. V. (1984). Career civil service reviewer: Professional and sub-professional levels (Rev. ed.). s.n.].

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Mabutas, Andres, और Arellano V. Busto. Career Civil Service Reviewer: Professional and Sub-professional Levels. Rev. ed. [S.l: s.n.], 1984.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Mabutas, Andres, और Arellano V. Busto. Career Civil Service Reviewer: Professional and Sub-professional Levels. Rev. ed. s.n.], 1984.